22844389 has 4 divisors (see below), whose sum is σ = 22865356. Its totient is φ = 22823424.

The previous prime is 22844383. The next prime is 22844399. The reversal of 22844389 is 98344822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6708100 + 16136289 = 2590^2 + 4017^2 .

It is a cyclic number.

It is not a de Polignac number, because 22844389 - 2⁵ = 22844357 is a prime.

It is a super-2 number, since 2×22844389² = 1043732217566642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22844383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8754 + ... + 11059.

It is an arithmetic number, because the mean of its divisors is an integer number (5716339).

Almost surely, 2^22844389 is an apocalyptic number.

It is an amenable number.

22844389 is a deficient number, since it is larger than the sum of its proper divisors (20967).

22844389 is a wasteful number, since it uses less digits than its factorization.

22844389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20966.

The product of its digits is 110592, while the sum is 40.

The square root of 22844389 is about 4779.5804209156. The cubic root of 22844389 is about 283.7438881643.

The spelling of 22844389 in words is "twenty-two million, eight hundred forty-four thousand, three hundred eighty-nine".